<template>
  <div class="app-container">
    <!-- 搜索工作栏 -->
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="文件路径" prop="path">
        <el-input v-model="queryParams.path" placeholder="请输入文件路径" clearable @keyup.enter.native="handleQuery" />
      </el-form-item>
      <el-form-item label="创建时间">
        <el-date-picker v-model="dateRangeCreateTime" style="width: 240px" value-format="yyyy-MM-dd" type="daterange"
          range-separator="-" start-placeholder="开始日期" end-placeholder="结束日期" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <!-- 操作工具栏 -->
    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd">上传文件</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <!-- 列表 -->
    <el-table v-loading="loading" :data="list">
      <el-table-column label="文件名" align="center" prop="path" />
      <el-table-column label="URL" align="center" prop="url" />
      <el-table-column label="文件大小" align="center" prop="size" width="120" :formatter="sizeFormat" />
      <el-table-column label="文件类型" align="center" prop="type" width="80" />
      <!--      <el-table-column label="文件内容" align="center" prop="content">-->
      <!--        <template slot-scope="scope">-->
      <!--          <img v-if="scope.row.type === 'jpg' || scope.row.type === 'png' || scope.row.type === 'gif'"-->
      <!--               width="200px" :src="getFileUrl + scope.row.id">-->
      <!--          <i v-else>非图片，无法预览</i>-->
      <!--        </template>-->
      <!--      </el-table-column>-->
      <el-table-column label="上传时间" align="center" prop="createTime" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width" width="100">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
            v-hasPermi="['infra:file:delete']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页组件 -->
    <pagination v-show="total > 0" :total="total" :page.sync="queryParams.pageNo" :limit.sync="queryParams.pageSize"
      @pagination="getList" />

    <!-- 对话框(添加 / 修改) -->
    <el-dialog :title="upload.title" :visible.sync="upload.open" width="400px" append-to-body>
      <el-upload ref="upload" :limit="1" accept=".jpg, .png, .gif" :auto-upload="false" drag :headers="upload.headers"
        :action="upload.url" :data="upload.data" :disabled="upload.isUploading" :on-change="handleFileChange"
        :on-progress="handleFileUploadProgress" :on-success="handleFileSuccess">
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">
          将文件拖到此处，或 <em>点击上传</em>
        </div>
        <div class="el-upload__tip" style="color:red" slot="tip">提示：仅允许导入 jpg、png、gif 格式文件！</div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">确 定</el-button>
        <el-button @click="upload.open = false">取 消</el-button>
      </div>
    </el-dialog>

  </div>
</template>

<script>
  import {
    deleteFile,
    getFilePage
  } from "@/api/infra/file";
  import {
    getToken
  } from "@/utils/auth";

  export default {
    name: "File",
    data() {
      return {
        getFileUrl: process.env.VUE_APP_BASE_API + '/admin-api/infra/file/get/',
        // 遮罩层
        loading: true,
        // 显示搜索条件
        showSearch: true,
        // 总条数
        total: 0,
        // 文件列表
        list: [],
        // 弹出层标题
        title: "",
        dateRangeCreateTime: [],
        // 查询参数
        queryParams: {
          pageNo: 1,
          pageSize: 10,
          path: null,
          type: null,
        },
        // 用户导入参数
        upload: {
          open: false, // 是否显示弹出层
          title: "", // 弹出层标题
          isUploading: false, // 是否禁用上传
          url: process.env.VUE_APP_BASE_API + "/admin-api/infra/file/upload", // 请求地址
          headers: {
            Authorization: "Bearer " + getToken()
          }, // 设置上传的请求头部
          data: {} // 上传的额外数据，用于文件名
        },
      };
    },
    created() {
      this.getList();
    },
    methods: {
      /** 查询列表 */
      getList() {
        this.loading = true;
        // 处理查询参数
        let params = {
          ...this.queryParams
        };
        this.addBeginAndEndTime(params, this.dateRangeCreateTime, 'createTime');
        // 执行查询
        getFilePage(params).then(response => {
          this.list = response.data.list;
          this.total = response.data.total;
          this.loading = false;
        });
      },
      /** 取消按钮 */
      cancel() {
        this.open = false;
        this.reset();
      },
      /** 表单重置 */
      reset() {
        this.form = {
          content: undefined,
        };
        this.resetForm("form");
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.queryParams.pageNo = 1;
        this.getList();
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.dateRangeCreateTime = [];
        this.resetForm("queryForm");
        this.handleQuery();
      },
      /** 新增按钮操作 */
      handleAdd() {
        this.upload.open = true;
        this.upload.title = "上传文件";
      },
      /** 处理上传的文件发生变化 */
      handleFileChange(file, fileList) {
        this.upload.data.path = file.name;
      },
      /** 处理文件上传中 */
      handleFileUploadProgress(event, file, fileList) {
        this.upload.isUploading = true; // 禁止修改
      },
      /** 发起文件上传 */
      submitFileForm() {
        this.$refs.upload.submit();
      },
      /** 文件上传成功处理 */
      handleFileSuccess(response, file, fileList) {
        // 清理
        this.upload.open = false;
        this.upload.isUploading = false;
        this.$refs.upload.clearFiles();
        // 提示成功，并刷新
        this.$modal.msgSuccess("上传成功");
        this.getList();
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        const id = row.id;
        this.$modal.confirm('是否确认删除文件编号为"' + id + '"的数据项?').then(function () {
          return deleteFile(id);
        }).then(() => {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        }).catch(() => {});
      },
      // 用户昵称展示
      sizeFormat(row, column) {
        const unitArr = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
        const srcSize = parseFloat(row.size);
        const index = Math.floor(Math.log(srcSize) / Math.log(1024));
        let size = srcSize / Math.pow(1024, index);
        size = size.toFixed(2); //保留的小数位数
        return size + ' ' + unitArr[index];
      },
    }
  };

</script>
